EGR vavle
Senior User
Joined: Dec 2003
Posts: 150
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From: Aiken SC
That could still be the dpfe sensor. I'm pretty sure thats the code mine was throwing. Replaced the dpfe and cleared it and it hasn't come back. One thing to check is the lines on the dpfe sensor if they have a white residue its bad.
More Turbo
Joined: Jan 2004
Posts: 607
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From: Florida
Located next to the EGR, front & to the left as U look @ the EGR. I found it in the Haynes book under Chapter 6 page 6-15. Emissiona & Engine Control Systems. I have the same code & I'm gonna check the hoses for white stuff. AZ cleared the code but it came back w/in a day or two so this might be the problem w/mine.
Dan, U mentioned the ports can be cleaned w/a rifle brush. R U talk'in bout the DPFE sensor or when U take it off clean the ports. I've never removed one so that's why I'm asking.
Thanks,
Dan, U mentioned the ports can be cleaned w/a rifle brush. R U talk'in bout the DPFE sensor or when U take it off clean the ports. I've never removed one so that's why I'm asking.
Thanks,
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Postmaster
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From: Delaware
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Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
Originally Posted by danlee
My 2002 4.6 Mountaineer is throwing the same code. I'll check that sensor.
What is the function of the DPFE sensor?
More Turbo
Joined: Jan 2004
Posts: 607
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From: Florida
Name-Diffrential Feedback Pressure Sensor=DPFE.
The pressure sensor monitors upstream (before) & downstream (after) exhaust back pressure. The back pressure coefficient is relayed to the PCM & correct amount of EGR (duty cycle) is applied to the EGR vacuum regulator control (EVR). The calculations in difference between the two pressures, the PCM determines exactly the EGR flow rate @ driving conditions.
From the book. I ain't that smart.
The pressure sensor monitors upstream (before) & downstream (after) exhaust back pressure. The back pressure coefficient is relayed to the PCM & correct amount of EGR (duty cycle) is applied to the EGR vacuum regulator control (EVR). The calculations in difference between the two pressures, the PCM determines exactly the EGR flow rate @ driving conditions.
From the book. I ain't that smart.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
Originally Posted by danlee
I can't locate a sensor in front or to the left of the EGR.
I'll get one tomorrow and replace the old one. Then I'll clear the code, and wait to see if it returns.
Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
Originally Posted by Rollbar
Do U have a V6? If I'm right my 4.6 is on the drivers side 1/2 way to the front og the engine.
P.S. Let us know what happens please.
P.S. Let us know what happens please.
I went to Advance Auto Parts and they didn't have one. That was the cheapest price. I'll try Auto Zone or NAPA tomorrow.
I don't think that it is an emergency. The EGR valve is working, it's just the stupid sensor, that's screwed up.
I don't need an smog test for a year and 1/2.
More Turbo
Joined: Jan 2004
Posts: 607
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From: Florida
OK thanks. If memory serves U might be better getting it @ Ford. I can't remember who told me but someone said Ford would have the latest model/upgrade. ?????????????????????????????????????????????????
Postmaster
Joined: Aug 2001
Posts: 4,270
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From: Delaware
Originally Posted by Rollbar
OK thanks. If memory serves U might be better getting it @ Ford. I can't remember who told me but someone said Ford would have the latest model/upgrade. ?????????????????????????????????????????????????
I wouldn't bother to replace it until I need to get it smogged, but I can't tell if anything else is wrong with the 'Service Engine Soon' light always on.